/Engine/Source/Runtime/Slate/Public/Framework/Application/SlateApplication.h
Directly routes a pointer down event to the widgets in the specified widget path
The reply returned by the widget that handled the event
[FReply](API\Runtime\SlateCore\Input\FReply) RoutePointerDownEvent ( const [FWidgetPath](API\Runtime\SlateCore\Layout\FWidgetPath) & WidgetsUnderPointer, const [FPointerEvent](API\Runtime\SlateCore\Input\FPointerEvent) & PointerEvent )